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 |
Boeing
BA
|
+$55.8M |
| 2 |
Microsoft
MSFT
|
+$42.2M |
| 3 |
Pinduoduo
PDD
|
+$41.3M |
| 4 |
Apple
AAPL
|
+$32M |
| 5 |
Direxion Daily Semiconductor Bull 3X ETF
SOXL
|
+$28.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$95.2M |
| 2 |
Citigroup
C
|
+$57.2M |
| 3 |
Pfizer
PFE
|
+$56.4M |
| 4 |
TSMC
TSM
|
+$39.7M |
| 5 |
Starbucks
SBUX
|
+$35.5M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.4% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.15% |
| 4 | Industrials | 0.13% |
| 5 | Financials | 0.13% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
601
PUT
Apollo Global Management
APO
$68.5B
| $22.3M | 0.01% |
178,400
+83,300
| +88% | +$9.62M |
|
602
CALL
Teck Resources
TECK
$29B
| $22.3M | 0.01% |
426,300
+260,100
| +156% | +$12.4M |
|
603
CALL
iShares Gold Trust
IAU
$62.8B
| $22.2M | 0.01% |
446,700
+74,800
| +20% | +$3.5M |
|
604
PUT
Honeywell
HON
$77.4B
| $22.1M | 0.01% |
113,315
-48,806
| -30% | -$9.47M |
|
605
CALL
Match Group
MTCH
$8.7B
| $22M | 0.01% |
580,700
+14,400
| +3% | +$504K |
|
606
PUT
Allstate
ALL
$65.3B
| $21.9M | 0.01% |
115,500
+31,700
| +38% | +$5.63M |
|
607
CALL
Restaurant Brands International
QSR
$25B
| $21.8M | 0.01% |
302,600
+278,300
| +1,145% | +$19.6M |
|
608
CALL
S&P Global
SPGI
$124B
| $21.8M | 0.01% |
42,200
+6,100
| +17% | +$3.02M |
|
609
PUT
Corning
GLW
$135B
| $21.8M | 0.01% |
482,000
+66,500
| +16% | +$2.8M |
|
610
PUT
Twilio
TWLO
$27.7B
| $21.7M | 0.01% |
333,400
+39,700
| +14% | +$2.38M |
|
611
CALL
HCA Healthcare
HCA
$83.1B
| $21.7M | 0.01% |
53,300
+12,200
| +30% | +$4.47M |
|
612
CALL
Yum! Brands
YUM
$40.5B
| $21.7M | 0.01% |
155,000
+20,600
| +15% | +$2.74M |
|
613
PUT
Halliburton
HAL
$27.4B
| $21.6M | 0.01% |
745,000
-149,000
| -17% | -$4.7M |
|
614
CALL
Chewy
CHWY
$8.4B
| $21.6M | 0.01% |
737,700
-589,300
| -44% | -$15.7M |
|
615
CALL
AstraZeneca
AZN
$261B
| $21.6M | 0.01% |
138,400
-18,650
| -12% | -$3.01M |
|
616
Baidu
BIDU
$36.3B
| $21.6M | 0.01% |
204,790
-170,513
| -45% | -$15.1M |
|
617
CALL
AGNC Investment
AGNC
$12.2B
| $21.5M | 0.01% |
2,058,600
+762,500
| +59% | +$7.75M |
|
618
CALL
Celsius Holdings
CELH
$6.97B
| $21.5M | 0.01% |
686,500
+331,100
| +93% | +$13.9M |
|
619
CALL
e.l.f. Beauty
ELF
$4.48B
| $21.4M | 0.01% |
196,600
+83,800
| +74% | +$13.1M |
|
620
CALL
CleanSpark
CLSK
$4.06B
| $21.4M | 0.01% |
2,293,500
+1,562,100
| +214% | +$19.8M |
|
|
TYNS
621
CALL
DELISTED
Direxion Daily 7-10 Year Treasury Bear 1X Shares
TYNS
| $21.4M | 0.01% |
167,700
+35,900
| +27% | +$4.58M |
|
622
CALL
Dow Inc
DOW
$22.3B
| $21.3M | 0.01% |
390,200
-209,900
| -35% | -$11.1M |
|
623
Freeport-McMoran
FCX
$91.4B
| $21.2M | 0.01% |
425,197
+98,366
| +30% | +$4.43M |
|
624
PUT
Amphenol
APH
$193B
| $21.2M | 0.01% |
325,500
+207,900
| +177% | +$13.5M |
|
|
WBA
625
PUT
DELISTED
Walgreens Boots Alliance
WBA
| $21.2M | 0.01% |
2,366,700
+727,600
| +44% | +$7.49M |
|
Similar funds
Simplex Trading's Q3 2024 Portfolio in Review
As of Q3 2024, Simplex Trading held 9,964 positions worth $170B, up 5.3% from $162B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q3 2024 filing shows 1,185 new, 3,232 increased, 3,829 reduced and 1,476 closed positions. Its largest new stake was Boeing: 325,328 shares worth $49.5M. The largest sale was Broadcom, an estimated $95.2M.
By sector, the portfolio is most concentrated in Technology at 0.4% of assets, down from 0.53% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q3 2024 buy was Boeing: 325,328 shares worth $49.5M.
- Simplex Trading added most to Pinduoduo in Q3 2024, an estimated $41.3M increase.
- Simplex Trading's biggest Q3 2024 reduction was Citigroup, cutting an estimated $57.2M.
- Simplex Trading fully exited Broadcom in Q3 2024, selling an estimated $95.2M.
- Simplex Trading's ten largest holdings make up 50% of its $170B portfolio in Q3 2024.
- Simplex Trading opened 1,185 new positions and closed 1,476 in Q3 2024.
- Simplex Trading's portfolio value rose 5.3% quarter-over-quarter to $170B.
Based on Simplex Trading's 13F filing for Q3 2024, filed 8 Nov 2024.