Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2401
United Microelectronic
UMC
$48.9B
| $1.5M | ﹤0.01% |
164,903
-14,445
| -8% | -$143K |
|
2402
CALL
Booz Allen Hamilton
BAH
$8.7B
| $1.5M | ﹤0.01% |
17,100
+8,700
| +104% | +$716K |
|
2403
PUT
Comstock Resources
CRK
$3.97B
| $1.5M | ﹤0.01% |
115,100
+49,200
| +75% | +$438K |
|
2404
PUT
Hudbay
HBM
$9.92B
| $1.5M | ﹤0.01% |
191,200
+154,600
| +422% | +$1.2M |
|
2405
CALL
Vroom Inc
VRM
$36.9M
| $1.5M | ﹤0.01% |
7,051
+178
| +3% | +$84.5K |
|
|
XIFR
2406
PUT
XPLR Infrastructure LP
XIFR
$1.18B
| $1.5M | ﹤0.01% |
18,000
+11,500
| +177% | +$884K |
|
|
SWTX
2407
PUT
DELISTED
SpringWorks Therapeutics
SWTX
| $1.5M | ﹤0.01% |
26,500
+25,600
| +2,844% | +$1.46M |
|
2408
CALL
WillScot Mobile Mini Holdings
WSC
$4.8B
| $1.49M | ﹤0.01% |
38,200
-20,100
| -34% | -$756K |
|
2409
PUT
FTAI Aviation
FTAI
$22.2B
| $1.49M | ﹤0.01% |
67,918
-38,292
| -36% | -$851K |
|
2410
BHP
BHP
$213B
| $1.49M | ﹤0.01% |
21,651
-96,214
| -82% | -$5.85M |
|
|
CRHC
2411
PUT
DELISTED
Cohn Robbins Holdings Corp.
CRHC
| $1.49M | ﹤0.01% |
150,200
+84,100
| +127% | +$832K |
|
2412
CALL
Leidos
LDOS
$14.1B
| $1.49M | ﹤0.01% |
13,800
+11,000
| +393% | +$1.06M |
|
|
CS
2413
DELISTED
Credit Suisse Group
CS
| $1.49M | ﹤0.01% |
189,898
+103,146
| +119% | +$916K |
|
|
DIDI
2414
CALL
DELISTED
DiDi Global Inc. American depositary shares, each four representing one Class A ordinary share
DIDI
| $1.49M | ﹤0.01% |
595,800
+239,400
| +67% | +$945K |
|
|
AYX
2415
CALL
DELISTED
Alteryx Inc
AYX
| $1.49M | ﹤0.01% |
20,800
-13,500
| -39% | -$797K |
|
2416
iShares National Muni Bond ETF
MUB
$45.1B
| $1.49M | ﹤0.01% |
+13,561
| New | +$1.53M |
|
2417
On Holding
ONON
$11.9B
| $1.49M | ﹤0.01% |
58,890
+30,692
| +109% | +$818K |
|
2418
CALL
Teekay Tankers
TNK
$2.63B
| $1.49M | ﹤0.01% |
107,400
+94,300
| +720% | +$1.15M |
|
|
CBD
2419
CALL
DELISTED
Companhia Brasileira de Distribuicao
CBD
| $1.49M | ﹤0.01% |
295,000
+244,000
| +478% | +$1.04M |
|
2420
PUT
Celsius Holdings
CELH
$6.93B
| $1.48M | ﹤0.01% |
80,700
-80,100
| -50% | -$1.44M |
|
|
NNDM
2421
Nano Dimension
NNDM
$309M
| $1.48M | ﹤0.01% |
416,580
-1,510
| -0.4% | -$5.44K |
|
2422
PUT
Newmark Group
NMRK
$2.73B
| $1.48M | ﹤0.01% |
93,100
+10,700
| +13% | +$174K |
|
2423
PUT
Range Resources
RRC
$9.11B
| $1.48M | ﹤0.01% |
48,800
-40,600
| -45% | -$926K |
|
2424
PUT
Revvity
RVTY
$12.3B
| $1.48M | ﹤0.01% |
8,500
+7,800
| +1,114% | +$1.39M |
|
2425
PUT
Allegiant Air
ALGT
$2.64B
| $1.48M | ﹤0.01% |
9,100
+8,700
| +2,175% | +$1.47M |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.