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 | |
|---|---|---|---|---|---|---|
2601
CALL
Banco Macro
BMA
$5.81B
| $913K | ﹤0.01% |
11,800
-700
| -6% | -$59.5K |
|
2602
Viavi Solutions
VIAV
$7.95B
| $913K | ﹤0.01% |
+27,420
| New | +$725K |
|
2603
PUT
Sony
SONY
$137B
| $912K | ﹤0.01% |
56,000
-101,200
| -64% | -$2.27M |
|
2604
Harmony Gold Mining
HMY
$9.7B
| $911K | ﹤0.01% |
59,263
-13,537
| -19% | -$268K |
|
2605
PUT
Village Farms International
VFF
$240M
| $911K | ﹤0.01% |
320,600
+283,400
| +762% | +$920K |
|
2606
PUT
Ball Corp
BALL
$17.5B
| $910K | ﹤0.01% |
15,400
-5,500
| -26% | -$334K |
|
2607
PUT
SL Green Realty
SLG
$3.83B
| $909K | ﹤0.01% |
24,600
-13,400
| -35% | -$558K |
|
|
INFQ
2608
CALL
Infleqtion Inc
INFQ
$1.93B
| $908K | ﹤0.01% |
+92,600
| New | +$1.05M |
|
2609
Lightpath Technologies
LPTH
$590M
| $907K | ﹤0.01% |
90,437
+54,965
| +155% | +$631K |
|
2610
PUT
American Resources Corp
AREC
$183M
| $907K | ﹤0.01% |
374,800
+304,500
| +433% | +$969K |
|
2611
CALL
Forte Biosciences
FBRX
$1.57B
| $907K | ﹤0.01% |
+35,000
| New | +$1.01M |
|
2612
PUT
Equitable Holdings
EQH
$13.2B
| $905K | ﹤0.01% |
24,400
+24,100
| +8,033% | +$1.03M |
|
2613
CME Group
CME
$95.4B
| $904K | ﹤0.01% |
+3,061
| New | +$909K |
|
2614
PUT
Janus Henderson Small Cap Growth Alpha ETF
JSML
$355M
| $904K | ﹤0.01% |
19,000
-72,100
| -79% | -$5.38M |
|
2615
PUT
Onto Innovation
ONTO
$10.9B
| $902K | ﹤0.01% |
4,400
+4,100
| +1,367% | +$839K |
|
2616
PUT
Logitech
LOGI
$14.8B
| $902K | ﹤0.01% |
9,900
-41,100
| -81% | -$3.79M |
|
2617
PUT
Ocular Therapeutix
OCUL
$1.83B
| $902K | ﹤0.01% |
106,500
-44,100
| -29% | -$420K |
|
|
EMBJ
2618
CALL
Embraer S.A. ADS
EMBJ
$12B
| $902K | ﹤0.01% |
15,200
-9,500
| -38% | -$650K |
|
2619
CALL
Omeros
OMER
$845M
| $902K | ﹤0.01% |
85,400
-44,100
| -34% | -$520K |
|
2620
PUT
Capri Holdings
CPRI
$1.82B
| $900K | ﹤0.01% |
51,100
-182,900
| -78% | -$3.87M |
|
2621
CALL
International Paper
IP
$22.6B
| $900K | ﹤0.01% |
25,200
-98,200
| -80% | -$4.08M |
|
2622
CALL
American Water Works
AWK
$27B
| $898K | ﹤0.01% |
6,600
-13,900
| -68% | -$1.84M |
|
2623
Tyson Foods
TSN
$21.5B
| $898K | ﹤0.01% |
+14,015
| New | +$870K |
|
2624
CALL
Qiagen
QGEN
$8.62B
| $897K | ﹤0.01% |
22,400
+20,900
| +1,393% | +$989K |
|
2625
Black Stone Minerals
BSM
$3.14B
| $896K | ﹤0.01% |
59,237
+31,165
| +111% | +$462K |
|
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.