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 | |
|---|---|---|---|---|---|---|
8651
Innodata
INOD
$1.79B
| $13K | ﹤0.01% |
1,902
-5,254
| -73% | -$30.9K |
|
8652
PUT
inTEST
INTT
$152M
| $13K | ﹤0.01% |
1,300
+1,200
| +1,200% | +$13.1K |
|
8653
iShares Russell Top 200 Value ETF
IWX
$3.95B
| $13K | ﹤0.01% |
+199
| New | +$13.8K |
|
8654
CALL
KALA BIO
KALA
$12.3M
| $13K | ﹤0.01% |
4
-4
| -50% | -$10.5K |
|
8655
CALL
KRONOS Worldwide
KRO
$694M
| $13K | ﹤0.01% |
900
-20,000
| -96% | -$297K |
|
8656
PUT
Liberty Broadband Class C
LBRDK
$4.73B
| $13K | ﹤0.01% |
100
-400
| -80% | -$58.2K |
|
8657
Lisata Therapeutics
LSTA
$9.47M
| $13K | ﹤0.01% |
+1,259
| New | +$14.4K |
|
8658
CALL
Nautilus Biotechnolgy
NAUT
$144M
| $13K | ﹤0.01% |
3,200
+1,200
| +60% | +$4.93K |
|
8659
CALL
Nexa Resources
NEXA
$1.58B
| $13K | ﹤0.01% |
1,400
-100
| -7% | -$866 |
|
8660
CALL
NN Inc
NNBR
$251M
| $13K | ﹤0.01% |
+4,600
| New | +$15.1K |
|
8661
CALL
NanoViricides
NNVC
$39.8M
| $13K | ﹤0.01% |
6,600
-6,700
| -50% | -$15.7K |
|
|
NVEE
8662
CALL
DELISTED
NV5 Global
NVEE
| $13K | ﹤0.01% |
+400
| New | +$11.8K |
|
8663
CALL
Enviri
NVRI
$632M
| $13K | ﹤0.01% |
+1,100
| New | +$16.2K |
|
8664
CALL
Pulse Biosciences
PLSE
$2.43B
| $13K | ﹤0.01% |
2,800
+2,600
| +1,300% | +$21.3K |
|
8665
CALL
Ribbon Communications
RBBN
$393M
| $13K | ﹤0.01% |
4,400
+1,700
| +63% | +$6.97K |
|
8666
Replimune Group
REPL
$402M
| $13K | ﹤0.01% |
+799
| New | +$15.1K |
|
8667
CALL
Rockwell Medical
RMTI
$26.9M
| $13K | ﹤0.01% |
+268
| New | +$11.4K |
|
|
SNCY
8668
PUT
DELISTED
Sun Country Airlines
SNCY
| $13K | ﹤0.01% |
500
-100
| -17% | -$2.61K |
|
|
SYBX
8669
CALL
DELISTED
Synlogic
SYBX
| $13K | ﹤0.01% |
367
+260
| +243% | +$8.1K |
|
8670
CALL
Tucows
TCX
$103M
| $13K | ﹤0.01% |
200
| – | – |
|
8671
PUT
Titan International
TWI
$500M
| $13K | ﹤0.01% |
900
-300
| -25% | -$3.51K |
|
8672
PUT
Universal Insurance Holdings
UVE
$1.25B
| $13K | ﹤0.01% |
1,000
-3,400
| -77% | -$51K |
|
8673
CALL
Vor Biopharma
VOR
$1.05B
| $13K | ﹤0.01% |
+110
| New | +$18.7K |
|
|
VIVO
8674
CALL
VivoPower PLC
VIVO
$115M
| $13K | ﹤0.01% |
740
+180
| +32% | +$4.15K |
|
|
WIMI
8675
PUT
WiMi Hologram Cloud
WIMI
$20.8M
| $13K | ﹤0.01% |
510
-150
| -23% | -$4.04K |
|
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.