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 | |
|---|---|---|---|---|---|---|
5251
CALL
Ashland
ASH
$3.33B
| $186K | ﹤0.01% |
1,900
+1,600
| +533% | +$154K |
|
|
AZEK
5252
PUT
DELISTED
The AZEK Co
AZEK
| $186K | ﹤0.01% |
7,500
+5,700
| +317% | +$179K |
|
5253
Beazer Homes USA
BZH
$891M
| $186K | ﹤0.01% |
12,250
-3,499
| -22% | -$62.1K |
|
5254
Cheesecake Factory
CAKE
$5.03B
| $186K | ﹤0.01% |
+4,677
| New | +$179K |
|
5255
CALL
MDU Resources
MDU
$4.17B
| $186K | ﹤0.01% |
18,409
+789
| +4% | +$8.36K |
|
5256
PUT
The RealReal
REAL
$1.44B
| $186K | ﹤0.01% |
25,700
-13,100
| -34% | -$116K |
|
5257
SI-BONE Inc
SIBN
$798M
| $186K | ﹤0.01% |
8,254
+6,912
| +515% | +$143K |
|
5258
PUT
Wheels Up
UP
$217M
| $186K | ﹤0.01% |
300
+19
| +7% | +$13.7K |
|
5259
Full Truck Alliance
YMM
$9.92B
| $186K | ﹤0.01% |
27,914
+24,684
| +764% | +$200K |
|
|
INVX
5260
Innovex International
INVX
$1.85B
| $186K | ﹤0.01% |
+4,994
| New | +$143K |
|
|
TUP
5261
PUT
DELISTED
Tupperware Brands Corporation
TUP
| $186K | ﹤0.01% |
9,600
-24,400
| -72% | -$416K |
|
5262
CALL
Cogent Communications
CCOI
$663M
| $185K | ﹤0.01% |
2,800
+2,700
| +2,700% | +$173K |
|
5263
CALL
CRA International
CRAI
$1.19B
| $185K | ﹤0.01% |
+2,200
| New | +$193K |
|
5264
PUT
Harrow
HROW
$1.45B
| $185K | ﹤0.01% |
+27,200
| New | +$210K |
|
5265
CALL
Oramed Pharmaceuticals
ORMP
$169M
| $185K | ﹤0.01% |
21,400
+6,000
| +39% | +$61.5K |
|
5266
Invesco Water Resources ETF
PHO
$2B
| $185K | ﹤0.01% |
3,505
-7,610
| -68% | -$403K |
|
|
ACRE
5267
PUT
Ares Commercial Real Estate
ACRE
$239M
| $184K | ﹤0.01% |
11,900
+8,300
| +231% | +$122K |
|
5268
PUT
Castor Maritime
CTRM
$18.9M
| $184K | ﹤0.01% |
10,050
-3,900
| -28% | -$60.2K |
|
|
EXK
5269
PUT
Endeavour Silver
EXK
$2.3B
| $184K | ﹤0.01% |
39,600
+13,700
| +53% | +$59.6K |
|
|
HDSN
5270
Hudson Technologies
HDSN
$244M
| $184K | ﹤0.01% |
29,784
+12,452
| +72% | +$55.2K |
|
5271
CALL
NewtekOne
NEWT
$423M
| $184K | ﹤0.01% |
6,900
-400
| -5% | -$10.8K |
|
5272
Plains All American Pipeline
PAA
$17.5B
| $184K | ﹤0.01% |
17,116
-89,655
| -84% | -$960K |
|
5273
Redwire
RDW
$2.02B
| $184K | ﹤0.01% |
21,791
-9,736
| -31% | -$59.4K |
|
|
SOL
5274
DELISTED
Emeren Group
SOL
| $184K | ﹤0.01% |
31,814
-16,730
| -34% | -$98.7K |
|
|
WPRT
5275
Westport Fuel Systems
WPRT
$32.7M
| $184K | ﹤0.01% |
11,662
+694
| +6% | +$12.4K |
|
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.