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 | |
|---|---|---|---|---|---|---|
5576
CALL
Liberty Latin America Class C
LILAK
$1.63B
| $150K | ﹤0.01% |
17,160
+4,620
| +37% | +$43.9K |
|
5577
CALL
Lloyds Banking Group
LYG
$89.5B
| $150K | ﹤0.01% |
62,500
+46,700
| +296% | +$124K |
|
5578
MiMedx Group
MDXG
$602M
| $150K | ﹤0.01% |
31,997
+19,430
| +155% | +$95K |
|
5579
Werner Enterprises
WERN
$2.24B
| $150K | ﹤0.01% |
3,662
-838
| -19% | -$36.9K |
|
|
ONC
5580
PUT
BeOne Medicines Ltd
ONC
$32.8B
| $150K | ﹤0.01% |
800
-500
| -38% | -$106K |
|
|
CKPT
5581
CALL
DELISTED
Checkpoint Therapeutics
CKPT
| $149K | ﹤0.01% |
8,430
+6,690
| +384% | +$144K |
|
5582
PUT
Gaotu Techedu
GOTU
$434M
| $149K | ﹤0.01% |
87,200
-32,800
| -27% | -$62.4K |
|
5583
CALL
Ironwood Pharmaceuticals
IRWD
$696M
| $149K | ﹤0.01% |
11,900
-122,400
| -91% | -$1.4M |
|
5584
MDU Resources
MDU
$4.17B
| $149K | ﹤0.01% |
14,780
+14,459
| +4,504% | +$153K |
|
5585
National CineMedia
NCMI
$376M
| $149K | ﹤0.01% |
5,903
-365
| -6% | -$10.2K |
|
5586
CALL
Penske Automotive Group
PAG
$14.3B
| $149K | ﹤0.01% |
1,600
-1,000
| -38% | -$101K |
|
|
RNAM
5587
CALL
DELISTED
Avidity Biosciences
RNAM
| $149K | ﹤0.01% |
8,100
+8,000
| +8,000% | +$136K |
|
|
TURN
5588
CALL
DELISTED
180 Degree Capital
TURN
| $149K | ﹤0.01% |
21,900
+3,100
| +16% | +$22K |
|
5589
CALL
Vital Farms
VITL
$545M
| $149K | ﹤0.01% |
12,100
+10,100
| +505% | +$152K |
|
5590
CALL
Weatherford International
WFRD
$6.29B
| $149K | ﹤0.01% |
4,500
+2,500
| +125% | +$78.3K |
|
|
YMAB
5591
CALL
DELISTED
Y-mAbs Therapeutics
YMAB
| $149K | ﹤0.01% |
+12,600
| New | +$129K |
|
|
ESSC
5592
DELISTED
East Stone Acquisition Corporation Ordinary Shares
ESSC
| $149K | ﹤0.01% |
14,381
+8,401
| +140% | +$93.1K |
|
5593
PUT
Buckle
BKE
$2.25B
| $148K | ﹤0.01% |
4,500
-2,000
| -31% | -$74.1K |
|
5594
PUT
Black Stone Minerals
BSM
$3.18B
| $148K | ﹤0.01% |
11,000
-55,100
| -83% | -$657K |
|
5595
CALL
Castle Biosciences
CSTL
$849M
| $148K | ﹤0.01% |
+3,300
| New | +$136K |
|
5596
Worthington Enterprises
WOR
$2.77B
| $148K | ﹤0.01% |
4,676
+4,527
| +3,038% | +$156K |
|
5597
CALL
Adeia
ADEA
$2.94B
| $147K | ﹤0.01% |
32,130
+30,618
| +2,025% | +$139K |
|
|
BRSP
5598
CALL
BrightSpire Capital
BRSP
$634M
| $147K | ﹤0.01% |
15,900
-3,600
| -18% | -$33.3K |
|
|
CRESY
5599
Cresud
CRESY
$795M
| $147K | ﹤0.01% |
18,752
+16,518
| +739% | +$97.7K |
|
5600
Healthcare Services Group
HCSG
$1.6B
| $147K | ﹤0.01% |
7,941
+5,728
| +259% | +$98.8K |
|
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.