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 | |
|---|---|---|---|---|---|---|
4301
PUT
ATI
ATI
$24.3B
| $354K | ﹤0.01% |
13,200
+6,200
| +89% | +$144K |
|
4302
CALL
Federal Realty Investment Trust
FRT
$10.9B
| $354K | ﹤0.01% |
2,900
+900
| +45% | +$111K |
|
4303
PUT
McEwen Inc
MUX
$999M
| $354K | ﹤0.01% |
42,090
+17,590
| +72% | +$152K |
|
4304
CALL
Quince Therapeutics
QNCX
$21.5M
| $354K | ﹤0.01% |
286
+50
| +21% | +$68K |
|
|
VRN
4305
PUT
DELISTED
Veren
VRN
| $353K | ﹤0.01% |
48,700
-6,900
| -12% | -$46.6K |
|
4306
BARK
BARK
$78M
| $352K | ﹤0.01% |
4,762
+2,499
| +110% | +$178K |
|
|
BLUE
4307
PUT
DELISTED
bluebird bio
BLUE
| $352K | ﹤0.01% |
2,185
+310
| +17% | +$40.9K |
|
4308
Gevo
GEVO
$353M
| $352K | ﹤0.01% |
75,217
-97,609
| -56% | -$373K |
|
4309
KKR & Co
KKR
$89B
| $352K | ﹤0.01% |
6,027
+5,149
| +586% | +$324K |
|
|
ACH
4310
CALL
Accendra Health
ACH
$253M
| $352K | ﹤0.01% |
8,000
-500
| -6% | -$21.5K |
|
4311
PUT
Oshkosh
OSK
$8.85B
| $352K | ﹤0.01% |
3,500
+300
| +9% | +$33.7K |
|
4312
Xponential Fitness
XPOF
$282M
| $352K | ﹤0.01% |
15,050
+10,275
| +215% | +$201K |
|
4313
CALL
Zedge
ZDGE
$38.4M
| $352K | ﹤0.01% |
57,800
-19,000
| -25% | -$134K |
|
|
DNMR
4314
PUT
DELISTED
Danimer Scientific, Inc.
DNMR
| $352K | ﹤0.01% |
1,505
-603
| -29% | -$122K |
|
4315
CALL
Amphastar Pharmaceuticals
AMPH
$905M
| $351K | ﹤0.01% |
9,800
-2,700
| -22% | -$76.6K |
|
4316
PUT
Calix
CALX
$2.24B
| $351K | ﹤0.01% |
8,200
-20,000
| -71% | -$1.01M |
|
4317
CALL
Steven Madden
SHOO
$3.16B
| $351K | ﹤0.01% |
9,100
+4,100
| +82% | +$169K |
|
|
EIGR
4318
CALL
DELISTED
Eiger BioPharmaceuticals, Inc.
EIGR
| $351K | ﹤0.01% |
1,410
+1,390
| +6,950% | +$220K |
|
4319
Ambev
ABEV
$47.9B
| $350K | ﹤0.01% |
+108,492
| New | +$303K |
|
4320
PUT
Assured Guaranty
AGO
$3.73B
| $350K | ﹤0.01% |
5,500
+4,100
| +293% | +$235K |
|
4321
ProShares Short S&P500
SH
$926M
| $350K | ﹤0.01% |
6,217
+3,129
| +101% | +$181K |
|
|
AHT
4322
Ashford Hospitality Trust
AHT
$20.8M
| $349K | ﹤0.01% |
3,427
-136
| -4% | -$12.1K |
|
4323
PUT
Genesco
GCO
$435M
| $349K | ﹤0.01% |
+5,500
| New | +$358K |
|
|
TPH
4324
CALL
DELISTED
Tri Pointe Homes
TPH
| $349K | ﹤0.01% |
17,400
+9,600
| +123% | +$223K |
|
4325
CALL
Cabot Corp
CBT
$4.72B
| $348K | ﹤0.01% |
5,100
+3,400
| +200% | +$224K |
|
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.