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 | |
|---|---|---|---|---|---|---|
|
AFMD
4576
CALL
DELISTED
Affimed
AFMD
| $294K | ﹤0.01% |
6,750
+5,410
| +404% | +$235K |
|
4577
Frontline
FRO
$8.71B
| $294K | ﹤0.01% |
33,412
-3,728
| -10% | -$29.5K |
|
4578
CALL
Legend Biotech
LEGN
$3.65B
| $294K | ﹤0.01% |
8,100
+6,500
| +406% | +$257K |
|
4579
CALL
Leslie's
LESL
$8.33M
| $294K | ﹤0.01% |
760
-1,015
| -57% | -$422K |
|
4580
Navios Maritime Partners
NMM
$2.22B
| $294K | ﹤0.01% |
8,358
-4,402
| -34% | -$133K |
|
4581
Piper Sandler
PIPR
$4.99B
| $294K | ﹤0.01% |
+8,984
| New | +$331K |
|
4582
Smith Micro Software
SMSI
$13.6M
| $294K | ﹤0.01% |
1,952
+1,176
| +152% | +$185K |
|
4583
PUT
Sonoco
SON
$5.83B
| $294K | ﹤0.01% |
4,700
+1,700
| +57% | +$98.4K |
|
4584
CALL
Actinium Pharmaceuticals
ATNM
$26.3M
| $292K | ﹤0.01% |
57,200
-8,700
| -13% | -$45.8K |
|
4585
CALL
Atossa Therapeutics
ATOS
$23M
| $292K | ﹤0.01% |
15,600
-5,980
| -28% | -$121K |
|
4586
CALL
Patterson-UTI
PTEN
$3.54B
| $292K | ﹤0.01% |
18,900
-700
| -4% | -$8.83K |
|
|
MDRX
4587
CALL
DELISTED
Veradigm Inc. Common Stock
MDRX
| $292K | ﹤0.01% |
13,000
+10,000
| +333% | +$203K |
|
|
SRTA
4588
PUT
Strata Critical Medical Inc
SRTA
$421M
| $291K | ﹤0.01% |
34,300
+19,500
| +132% | +$137K |
|
4589
GlobalFoundries
GFS
$25.8B
| $291K | ﹤0.01% |
4,673
-5,422
| -54% | -$320K |
|
|
LAND
4590
CALL
Gladstone Land Corp
LAND
$365M
| $291K | ﹤0.01% |
8,000
+4,100
| +105% | +$132K |
|
4591
CALL
O-I Glass
OI
$1.18B
| $291K | ﹤0.01% |
22,100
+10,100
| +84% | +$132K |
|
|
HCP
4592
PUT
DELISTED
HashiCorp, Inc. Class A Common Stock
HCP
| $291K | ﹤0.01% |
+5,400
| New | +$314K |
|
|
CONN
4593
CALL
DELISTED
Conn's Inc.
CONN
| $291K | ﹤0.01% |
18,900
+9,100
| +93% | +$196K |
|
|
LTHM
4594
PUT
DELISTED
Livent Corporation
LTHM
| $291K | ﹤0.01% |
11,200
+5,300
| +90% | +$124K |
|
|
CLDT
4595
CALL
Chatham Lodging
CLDT
$632M
| $290K | ﹤0.01% |
21,100
-17,000
| -45% | -$233K |
|
4596
Groupon
GRPN
$1.03B
| $290K | ﹤0.01% |
15,119
-42,644
| -74% | -$948K |
|
4597
PUT
Jabil
JBL
$30.1B
| $290K | ﹤0.01% |
4,700
-700
| -13% | -$43.2K |
|
|
LAND
4598
Gladstone Land Corp
LAND
$365M
| $290K | ﹤0.01% |
7,986
-3,129
| -28% | -$101K |
|
4599
VanEck Rare Earth/Strategic Metals ETF
REMX
$1.91B
| $290K | ﹤0.01% |
+2,459
| New | +$265K |
|
|
AMPS
4600
PUT
DELISTED
Altus Power
AMPS
| $290K | ﹤0.01% |
39,100
+38,700
| +9,675% | +$304K |
|
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.