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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4776
PUT
US Physical Therapy
USPH
$1.22B
| $214K | ﹤0.01% |
+1,900
| New | +$190K |
|
|
TUZ
4777
CALL
DELISTED
PIMCO 1-3 Year U.S. Treasury Index Exchange-Traded Fund
TUZ
| $214K | ﹤0.01% |
2,600
-2,100
| -45% | -$173K |
|
|
GTY
4778
CALL
Getty Realty Corp
GTY
$2.12B
| $213K | ﹤0.01% |
7,800
+7,400
| +1,850% | +$203K |
|
4779
PUT
Talos Energy
TALO
$2.44B
| $213K | ﹤0.01% |
15,300
-16,700
| -52% | -$218K |
|
4780
CALL
Amprius Technologies
AMPX
$1.34B
| $212K | ﹤0.01% |
80,300
-85,300
| -52% | -$317K |
|
4781
PUT
Kimbell Royalty Partners
KRP
$1.46B
| $212K | ﹤0.01% |
13,700
-5,500
| -29% | -$83.6K |
|
4782
CALL
Post Holdings
POST
$4.21B
| $212K | ﹤0.01% |
2,000
+1,900
| +1,900% | +$190K |
|
4783
PUT
Rocket Pharmaceuticals
RCKT
$351M
| $212K | ﹤0.01% |
7,900
-6,900
| -47% | -$196K |
|
4784
CALL
W&T Offshore
WTI
$515M
| $212K | ﹤0.01% |
80,000
-19,900
| -20% | -$56.9K |
|
4785
Asbury Automotive
ABG
$4.34B
| $211K | ﹤0.01% |
+898
| New | +$191K |
|
4786
PUT
ASE Group
ASX
$76.3B
| $211K | ﹤0.01% |
+19,200
| New | +$188K |
|
4787
PUT
Brighthouse Financial
BHF
$3.64B
| $211K | ﹤0.01% |
4,100
+3,900
| +1,950% | +$194K |
|
4788
CALL
Freedom Holding
FRHC
$9.88B
| $211K | ﹤0.01% |
3,000
-4,300
| -59% | -$335K |
|
4789
CALL
Acushnet Holdings
GOLF
$5.88B
| $211K | ﹤0.01% |
3,200
-24,500
| -88% | -$1.59M |
|
4790
GXO Logistics
GXO
$5.8B
| $211K | ﹤0.01% |
+3,935
| New | +$213K |
|
4791
CALL
Mercury Insurance
MCY
$5.91B
| $211K | ﹤0.01% |
4,100
+700
| +21% | +$30.9K |
|
|
NOAH
4792
PUT
Noah Holdings
NOAH
$583M
| $210K | ﹤0.01% |
18,400
+600
| +3% | +$6.96K |
|
4793
PUT
Ultragenyx Pharmaceutical
RARE
$2.56B
| $210K | ﹤0.01% |
4,500
-200
| -4% | -$9.43K |
|
4794
CALL
Real Brokerage
REAX
$357M
| $210K | ﹤0.01% |
+67,400
| New | +$185K |
|
4795
CALL
Sinclair Inc
SBGI
$994M
| $210K | ﹤0.01% |
15,600
+4,900
| +46% | +$70K |
|
4796
Clean Energy Fuels
CLNE
$425M
| $209K | ﹤0.01% |
+78,006
| New | +$233K |
|
|
HDSN
4797
CALL
Hudson Technologies
HDSN
$244M
| $209K | ﹤0.01% |
19,000
+15,300
| +414% | +$199K |
|
4798
Simplify Short Term Treasury Futures Strategy ETF
TUA
$699M
| $209K | ﹤0.01% |
9,597
-40,904
| -81% | -$916K |
|
|
SWN
4799
PUT
DELISTED
Southwestern Energy Company
SWN
| $209K | ﹤0.01% |
27,600
-54,700
| -66% | -$371K |
|
4800
PUT
InfraCap MLP ETF
AMZA
$467M
| $208K | ﹤0.01% |
5,100
+3,500
| +219% | +$132K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.