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 | |
|---|---|---|---|---|---|---|
|
EGLE
6451
CALL
DELISTED
Eagle Bulk Shipping Inc.
EGLE
| $81K | ﹤0.01% |
1,200
| – | – |
|
|
ENV
6452
PUT
DELISTED
ENVESTNET, INC.
ENV
| $81K | ﹤0.01% |
1,100
+1,000
| +1,000% | +$73.2K |
|
6453
CALL
American States Water
AWR
$3.36B
| $80K | ﹤0.01% |
900
-300
| -25% | -$26.7K |
|
6454
PUT
BeyondSpring
BYSI
$47.3M
| $80K | ﹤0.01% |
36,800
-54,200
| -60% | -$157K |
|
6455
PUT
Cooper-Standard Automotive
CPS
$523M
| $80K | ﹤0.01% |
9,200
+7,600
| +475% | +$124K |
|
6456
Eagle Materials
EXP
$6.29B
| $80K | ﹤0.01% |
627
-1,812
| -74% | -$257K |
|
6457
CALL
4D Molecular Therapeutics
FDMT
$532M
| $80K | ﹤0.01% |
+5,300
| New | +$83.2K |
|
6458
CALL
Idacorp
IDA
$8.27B
| $80K | ﹤0.01% |
700
+500
| +250% | +$54.4K |
|
6459
PUT
Limoneira
LMNR
$235M
| $80K | ﹤0.01% |
5,500
-6,600
| -55% | -$96K |
|
6460
Noble Corp
NE
$6.77B
| $80K | ﹤0.01% |
2,298
+2,058
| +858% | +$58K |
|
6461
StoneX
SNEX
$9.26B
| $80K | ﹤0.01% |
5,518
+3,078
| +126% | +$42.8K |
|
6462
Theravance Biopharma
TBPH
$874M
| $80K | ﹤0.01% |
8,401
-14,664
| -64% | -$144K |
|
6463
PUT
Transmedics
TMDX
$2.64B
| $80K | ﹤0.01% |
3,000
-300
| -9% | -$5.38K |
|
6464
WisdomTree
WT
$2.96B
| $80K | ﹤0.01% |
13,639
+2,108
| +18% | +$12K |
|
|
SLCA
6465
PUT
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $80K | ﹤0.01% |
4,300
-153,000
| -97% | -$1.93M |
|
|
VRTV
6466
PUT
DELISTED
VERITIV CORPORATION
VRTV
| $80K | ﹤0.01% |
600
+500
| +500% | +$54.5K |
|
6467
CALL
Angi Inc
ANGI
$229M
| $79K | ﹤0.01% |
1,410
-710
| -33% | -$51.8K |
|
6468
CALL
DNOW Inc
DNOW
$2.58B
| $79K | ﹤0.01% |
7,200
+6,000
| +500% | +$58.1K |
|
6469
CALL
FerroAtlántica
GSM
$594M
| $79K | ﹤0.01% |
10,300
-3,100
| -23% | -$21.2K |
|
6470
Incyte
INCY
$24.2B
| $79K | ﹤0.01% |
996
-26,950
| -96% | -$1.96M |
|
6471
CALL
American Century Diversified Corporate Bond ETF
KORP
$869M
| $79K | ﹤0.01% |
1,000
+600
| +150% | +$30.1K |
|
|
OPI
6472
CALL
DELISTED
Office Properties Income Trust
OPI
| $79K | ﹤0.01% |
3,100
-6,200
| -67% | -$158K |
|
6473
PUT
RenaissanceRe
RNR
$13.3B
| $79K | ﹤0.01% |
500
-1,700
| -77% | -$264K |
|
|
OLOX
6474
PUT
Olenox Industries
OLOX
$6.74M
| $79K | ﹤0.01% |
7
-18
| -72% | -$208K |
|
6475
Spire Global
SPIR
$444M
| $79K | ﹤0.01% |
4,715
-1,756
| -27% | -$34.3K |
|
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.