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 |
Amazon
AMZN
|
+$168M |
| 2 |
NVIDIA
NVDA
|
+$141M |
| 3 |
TSMC
TSM
|
+$121M |
| 4 |
Meta Platforms (Facebook)
META
|
+$107M |
| 5 |
SPDR Gold Trust
GLD
|
+$103M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$174M |
| 2 |
Western Digital
WDC
|
+$87.7M |
| 3 |
Broadcom
AVGO
|
+$62.2M |
| 4 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$52M |
| 5 |
Netflix
NFLX
|
+$44.6M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.62% |
| 2 | Communication Services | 0.22% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Healthcare | 0.2% |
| 5 | Industrials | 0.1% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1351
CALL
Uranium Energy
UEC
$4.71B
| $3.62M | ﹤0.01% |
268,400
-321,000
| -54% | -$4.95M |
|
1352
PUT
Cleveland-Cliffs
CLF
$6.81B
| $3.61M | ﹤0.01% |
427,700
-851,100
| -67% | -$9.74M |
|
1353
CALL
Gildan
GIL
$9.25B
| $3.61M | ﹤0.01% |
64,900
-77,600
| -54% | -$5.02M |
|
1354
CALL
Citizens Financial Group
CFG
$30.4B
| $3.59M | ﹤0.01% |
59,900
+21,800
| +57% | +$1.34M |
|
1355
CALL
Invesco Equal Weight 0-30 Year Treasury ETF
GOVI
$1.22B
| $3.59M | ﹤0.01% |
+58,700
| New | +$1.62M |
|
|
SEE
1356
CALL
DELISTED
Sealed Air
SEE
| $3.58M | ﹤0.01% |
85,100
-7,800
| -8% | -$326K |
|
1357
CALL
Ralph Lauren
RL
$22.2B
| $3.58M | ﹤0.01% |
10,400
+8,000
| +333% | +$2.84M |
|
1358
CALL
HSBC
HSBC
$355B
| $3.57M | ﹤0.01% |
43,300
-139,100
| -76% | -$11.8M |
|
1359
PUT
Apogee Therapeutics
APGE
$10.2B
| $3.56M | ﹤0.01% |
42,300
+7,200
| +21% | +$523K |
|
1360
CALL
Listed Funds Trust Roundhill Magnificent Seven ETF
MAGS
$3.91B
| $3.55M | ﹤0.01% |
103,700
+12,100
| +13% | +$758K |
|
1361
CALL
Republic Services
RSG
$66.7B
| $3.53M | ﹤0.01% |
16,100
+12,900
| +403% | +$2.83M |
|
1362
PUT
OneMain Financial
OMF
$6.9B
| $3.52M | ﹤0.01% |
65,900
+60,300
| +1,077% | +$3.58M |
|
1363
CALL
WisdomTree
WT
$2.97B
| $3.51M | ﹤0.01% |
241,200
+161,900
| +204% | +$2.5M |
|
1364
PUT
Synchrony
SYF
$23.7B
| $3.51M | ﹤0.01% |
51,600
-73,900
| -59% | -$5.37M |
|
1365
CALL
abrdn Physical Silver Shares ETF
SIVR
$4.04B
| $3.51M | ﹤0.01% |
49,000
-13,700
| -22% | -$1.09M |
|
1366
PUT
Hilton Worldwide
HLT
$74B
| $3.5M | ﹤0.01% |
11,500
-31,700
| -73% | -$9.61M |
|
1367
PUT
Evercore
EVR
$13.1B
| $3.49M | ﹤0.01% |
11,700
+9,500
| +432% | +$3.11M |
|
1368
PUT
Molina Healthcare
MOH
$10.3B
| $3.49M | ﹤0.01% |
26,200
+4,300
| +20% | +$684K |
|
1369
PUT
Parker-Hannifin
PH
$125B
| $3.49M | ﹤0.01% |
3,900
+2,100
| +117% | +$1.99M |
|
1370
CALL
IAMGOLD
IAG
$8.47B
| $3.49M | ﹤0.01% |
185,500
-323,200
| -64% | -$6.41M |
|
1371
PUT
International Flavors & Fragrances
IFF
$19.4B
| $3.49M | ﹤0.01% |
+48,100
| New | +$3.53M |
|
1372
PUT
FTAI Aviation
FTAI
$22.2B
| $3.48M | ﹤0.01% |
14,200
-10,400
| -42% | -$2.75M |
|
1373
CALL
NRG Energy
NRG
$29.8B
| $3.46M | ﹤0.01% |
23,700
-31,700
| -57% | -$4.99M |
|
1374
CALL
Millicom
TIGO
$15.8B
| $3.46M | ﹤0.01% |
46,200
+21,600
| +88% | +$1.42M |
|
1375
PUT
Sibanye-Stillwater
SBSW
$5.92B
| $3.45M | ﹤0.01% |
280,400
-218,400
| -44% | -$3.4M |
|
Similar funds
Simplex Trading's Q1 2026 Portfolio in Review
As of Q1 2026, Simplex Trading held 10,500 positions worth $149B, down 16% from $177B the previous quarter. Its ten largest holdings account for 51% of the portfolio.
Simplex Trading withdrew a net $18.1B in Q1 2026, closing 1,574 positions and reducing 3,926 holdings. Its most notable exit was Direxion Daily Semiconductor Bull 3X ETF, an estimated $52M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.62% of assets, up from 0.59% a quarter earlier, followed by Communication Services and Consumer Discretionary.
Against the trend, Simplex Trading opened a new position in Amazon worth $159M.
- Simplex Trading's largest Q1 2026 buy was Amazon: 764,884 shares worth $159M.
- Simplex Trading added most to NVIDIA in Q1 2026, an estimated $141M increase.
- Simplex Trading's biggest Q1 2026 reduction was Apple, cutting an estimated $174M.
- Simplex Trading fully exited Direxion Daily Semiconductor Bull 3X ETF in Q1 2026, selling an estimated $52M.
- Simplex Trading's ten largest holdings make up 51% of its $149B portfolio in Q1 2026.
- Simplex Trading opened 2,156 new positions and closed 1,574 in Q1 2026.
- Simplex Trading's portfolio value fell 16% quarter-over-quarter to $149B.
Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.