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 | |
|---|---|---|---|---|---|---|
|
RAD
2351
PUT
DELISTED
Rite Aid Corporation
RAD
| $1.58M | ﹤0.01% |
180,300
+117,700
| +188% | +$1.23M |
|
2352
PUT
Viasat
VSAT
$9.79B
| $1.58M | ﹤0.01% |
32,300
-26,500
| -45% | -$1.22M |
|
2353
PUT
BioMarin Pharmaceuticals
BMRN
$11.5B
| $1.57M | ﹤0.01% |
20,400
-33,500
| -62% | -$2.8M |
|
2354
CALL
Globant
GLOB
$1.35B
| $1.57M | ﹤0.01% |
6,000
+3,800
| +173% | +$964K |
|
2355
CALL
Global E Online
GLBE
$6.08B
| $1.57M | ﹤0.01% |
46,500
+14,800
| +47% | +$558K |
|
|
MAXR
2356
CALL
DELISTED
Maxar Technologies Inc. Common Stock
MAXR
| $1.57M | ﹤0.01% |
39,800
+8,000
| +25% | +$245K |
|
2357
CALL
AST SpaceMobile
ASTS
$16.8B
| $1.56M | ﹤0.01% |
156,700
+71,900
| +85% | +$528K |
|
|
NNDM
2358
CALL
Nano Dimension
NNDM
$309M
| $1.56M | ﹤0.01% |
439,000
+122,500
| +39% | +$442K |
|
|
PR
2359
PUT
Permian Resources
PR
$17.9B
| $1.56M | ﹤0.01% |
193,600
-82,600
| -30% | -$652K |
|
2360
CALL
Pembina Pipeline
PBA
$29.9B
| $1.56M | ﹤0.01% |
41,500
+22,600
| +120% | +$763K |
|
2361
PUT
Bloomin' Brands
BLMN
$680M
| $1.56M | ﹤0.01% |
71,100
+22,100
| +45% | +$477K |
|
2362
Jackson Financial
JXN
$8.32B
| $1.56M | ﹤0.01% |
+35,211
| New | +$1.47M |
|
2363
Mondelez International
MDLZ
$77.7B
| $1.56M | ﹤0.01% |
+24,805
| New | +$1.61M |
|
2364
CALL
Sundial Growers
SNDL
$325M
| $1.56M | ﹤0.01% |
222,470
-20,950
| -9% | -$116K |
|
2365
CALL
Autohome
ATHM
$2.43B
| $1.56M | ﹤0.01% |
51,200
+23,900
| +88% | +$724K |
|
2366
Macy's
M
$6.15B
| $1.55M | ﹤0.01% |
63,869
-155,650
| -71% | -$3.99M |
|
|
SWAV
2367
PUT
DELISTED
Shockwave Medical, Inc. Common Stock
SWAV
| $1.55M | ﹤0.01% |
7,500
+6,300
| +525% | +$1.04M |
|
|
BIG
2368
PUT
DELISTED
Big Lots, Inc.
BIG
| $1.55M | ﹤0.01% |
44,900
-1,700
| -4% | -$66.8K |
|
2369
PUT
Ares Capital
ARCC
$13.5B
| $1.55M | ﹤0.01% |
74,000
+46,300
| +167% | +$987K |
|
2370
PUT
Editas Medicine
EDIT
$399M
| $1.55M | ﹤0.01% |
81,500
-30,200
| -27% | -$561K |
|
2371
TG Therapeutics
TGTX
$8.58B
| $1.55M | ﹤0.01% |
162,899
+49,301
| +43% | +$571K |
|
|
SPR
2372
DELISTED
Spirit AeroSystems
SPR
| $1.55M | ﹤0.01% |
31,667
-100,668
| -76% | -$4.71M |
|
|
KRTX
2373
PUT
DELISTED
Karuna Therapeutics, Inc. Common Stock
KRTX
| $1.55M | ﹤0.01% |
12,200
+12,000
| +6,000% | +$1.35M |
|
2374
PUT
Yelp
YELP
$1.38B
| $1.54M | ﹤0.01% |
45,300
-12,300
| -21% | -$422K |
|
|
RADA
2375
PUT
DELISTED
Rada Electronic Industries Ltd
RADA
| $1.54M | ﹤0.01% |
110,900
+62,500
| +129% | +$712K |
|
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.