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 | |
|---|---|---|---|---|---|---|
4351
PUT
Packaging Corp of America
PKG
$22.2B
| $343K | ﹤0.01% |
2,200
+500
| +29% | +$73K |
|
4352
CALL
Broadridge
BR
$18.4B
| $342K | ﹤0.01% |
2,200
+100
| +5% | +$15.3K |
|
4353
RCI Hospitality Holdings
RICK
$202M
| $342K | ﹤0.01% |
5,574
+1,431
| +35% | +$99.6K |
|
4354
PUT
Zedge
ZDGE
$38.3M
| $342K | ﹤0.01% |
56,300
+39,800
| +241% | +$281K |
|
|
XXII
4355
CALL
22nd Century Group
XXII
$1.28M
| – | – |
0
| – | – |
|
|
BOXD
4356
CALL
DELISTED
Boxed, Inc.
BOXD
| $341K | ﹤0.01% |
+33,600
| New | +$342K |
|
|
AZEK
4357
CALL
DELISTED
The AZEK Co
AZEK
| $340K | ﹤0.01% |
13,700
+11,100
| +427% | +$349K |
|
4358
PUT
Genco Shipping & Trading
GNK
$1.1B
| $340K | ﹤0.01% |
14,400
-66,900
| -82% | -$1.24M |
|
4359
PUT
Garrett Motion
GTX
$5.39B
| $340K | ﹤0.01% |
47,300
+2,000
| +4% | +$14.3K |
|
4360
PUT
Mirion Technologies
MIR
$3.56B
| $340K | ﹤0.01% |
42,200
+2,900
| +7% | +$25K |
|
4361
PUT
Nordic American Tanker
NAT
$1.36B
| $340K | ﹤0.01% |
160,000
+42,500
| +36% | +$75.4K |
|
|
RWT
4362
CALL
Redwood Trust
RWT
$588M
| $340K | ﹤0.01% |
32,300
+3,100
| +11% | +$35.3K |
|
|
ENDP
4363
CALL
DELISTED
Endo International plc
ENDP
| $340K | ﹤0.01% |
147,500
+80,300
| +119% | +$236K |
|
4364
PUT
CarGurus
CARG
$3.34B
| $339K | ﹤0.01% |
8,000
+3,400
| +74% | +$125K |
|
4365
PUT
Cincinnati Financial
CINF
$27.8B
| $339K | ﹤0.01% |
2,500
-8,600
| -77% | -$1.06M |
|
|
SNBR
4366
PUT
DELISTED
Sleep Number
SNBR
| $339K | ﹤0.01% |
6,700
+6,100
| +1,017% | +$414K |
|
4367
PUT
Western Alliance Bancorporation
WAL
$8.81B
| $339K | ﹤0.01% |
4,100
-5,500
| -57% | -$538K |
|
4368
PUT
Owens Corning
OC
$11B
| $338K | ﹤0.01% |
3,700
+1,000
| +37% | +$91.9K |
|
4369
CALL
PDS Biotechnology
PDSB
$37.4M
| $338K | ﹤0.01% |
+54,700
| New | +$340K |
|
|
XXII
4370
PUT
22nd Century Group
XXII
$1.28M
| – | – |
0
| – | – |
|
4371
PUT
Microvast
MVST
$237M
| $337K | ﹤0.01% |
50,300
-31,000
| -38% | -$202K |
|
|
VERV
4372
PUT
DELISTED
Verve Therapeutics
VERV
| $337K | ﹤0.01% |
14,800
+14,500
| +4,833% | +$414K |
|
4373
CALL
Alpha Pro Tech
APT
$49.9M
| $336K | ﹤0.01% |
80,100
-198,900
| -71% | -$924K |
|
4374
PUT
Franklin Resources
BEN
$16.8B
| $335K | ﹤0.01% |
12,000
-8,000
| -40% | -$244K |
|
4375
PUT
FIGS
FIGS
$1.76B
| $335K | ﹤0.01% |
15,600
-15,200
| -49% | -$303K |
|
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.