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 | |
|---|---|---|---|---|---|---|
3676
CALL
InfraCap MLP ETF
AMZA
$470M
| $344K | ﹤0.01% |
16,500
+10,700
| +184% | +$468K |
|
3677
CALL
Bentley Systems
BSY
$10.8B
| $344K | ﹤0.01% |
9,800
-4,900
| -33% | -$180K |
|
3678
Direxion Daily S&P Oil & Gas Exp. & Prod. Bull 2X ETF
GUSH
$255M
| $344K | ﹤0.01% |
+7,781
| New | +$242K |
|
|
TMQ
3679
CALL
Trilogy Metals
TMQ
$541M
| $344K | ﹤0.01% |
95,800
-59,200
| -38% | -$270K |
|
3680
CALL
Alpha Tau Medical
DRTS
$1.06B
| $344K | ﹤0.01% |
48,600
+47,500
| +4,318% | +$335K |
|
3681
Teva Pharmaceuticals
TEVA
$40.8B
| $341K | ﹤0.01% |
+11,315
| New | +$364K |
|
3682
CALL
Driven Brands
DRVN
$2.35B
| $340K | ﹤0.01% |
27,000
+24,400
| +938% | +$343K |
|
3683
CALL
MannKind Corp
MNKD
$1.21B
| $340K | ﹤0.01% |
138,900
+24,300
| +21% | +$108K |
|
3684
CALL
Root
ROOT
$857M
| $340K | ﹤0.01% |
7,700
-9,500
| -55% | -$554K |
|
3685
CALL
Lightpath Technologies
LPTH
$651M
| $340K | ﹤0.01% |
33,900
-22,100
| -39% | -$254K |
|
3686
Vanguard California Tax-Exempt Bond ETF
VTEC
$2.79B
| $340K | ﹤0.01% |
+3,431
| New | +$345K |
|
3687
Cboe Global Markets
CBOE
$32.5B
| $339K | ﹤0.01% |
1,207
-2,554
| -68% | -$711K |
|
3688
CALL
Hess Midstream
HESM
$5.24B
| $338K | ﹤0.01% |
8,700
-10,800
| -55% | -$400K |
|
3689
CALL
Honda
HMC
$39.1B
| $338K | ﹤0.01% |
13,900
-1,800
| -11% | -$52.1K |
|
3690
iShares Core MSCI Emerging Markets ETF
IEMG
$150B
| $338K | ﹤0.01% |
4,840
+3,083
| +175% | +$223K |
|
3691
PUT
ChargePoint
CHPT
$141M
| $337K | ﹤0.01% |
69,400
-228,600
| -77% | -$1.39M |
|
3692
dLocal
DLO
$4.44B
| $337K | ﹤0.01% |
+25,973
| New | +$338K |
|
3693
CALL
Synaptics
SYNA
$4.19B
| $336K | ﹤0.01% |
4,800
+3,900
| +433% | +$317K |
|
3694
PUT
Ambev
ABEV
$48.1B
| $336K | ﹤0.01% |
115,100
-308,700
| -73% | -$882K |
|
3695
PUT
Xperi
XPER
$372M
| $336K | ﹤0.01% |
+60,000
| New | +$347K |
|
3696
PUT
Supernus Pharmaceuticals
SUPN
$2.59B
| $336K | ﹤0.01% |
+6,500
| New | +$331K |
|
3697
Alcoa
AA
$11.9B
| $335K | ﹤0.01% |
5,051
-97,121
| -95% | -$5.96M |
|
3698
Klaviyo
KVYO
$5.34B
| $335K | ﹤0.01% |
17,209
+16,531
| +2,438% | +$355K |
|
3699
Perma-Fix Environmental Services
PESI
$352M
| $335K | ﹤0.01% |
+31,318
| New | +$431K |
|
3700
MSCI
MSCI
$41.6B
| $334K | ﹤0.01% |
620
+319
| +106% | +$180K |
|
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.