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 |
Apple
AAPL
|
+$552M |
| 2 |
Strategy Inc
MSTR
|
+$85.8M |
| 3 |
MSTX
Defiance Daily Target 2x Long MSTR ETF
MSTX
|
+$48.1M |
| 4 |
Intel
INTC
|
+$45.4M |
| 5 |
Uber
UBER
|
+$43M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$133M |
| 2 |
Pinduoduo
PDD
|
+$82.6M |
| 3 |
Boeing
BA
|
+$49.8M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$45.1M |
| 5 |
Microsoft
MSFT
|
+$41M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.68% |
| 2 | Consumer Discretionary | 0.23% |
| 3 | Healthcare | 0.19% |
| 4 | Financials | 0.13% |
| 5 | Communication Services | 0.11% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
951
CALL
Return Stacked Bonds & Managed Futures ETF
RSBT
$137M
| $11.3M | 0.01% |
397,700
+245,500
| +161% | +$4.16M |
|
952
CALL
BCE
BCE
$19.8B
| $11.3M | 0.01% |
485,400
+197,900
| +69% | +$5.69M |
|
953
CALL
Iron Mountain
IRM
$37.1B
| $11.2M | 0.01% |
106,800
-137,400
| -56% | -$16.1M |
|
954
PUT
Prologis
PLD
$135B
| $11.2M | 0.01% |
106,000
-2,600
| -2% | -$299K |
|
955
CALL
Barclays
BCS
$93.3B
| $11.2M | 0.01% |
840,400
+79,000
| +10% | +$1.02M |
|
956
Dollar Tree
DLTR
$22.6B
| $11.1M | 0.01% |
148,540
+118,461
| +394% | +$8.13M |
|
957
CALL
Carrier Global
CARR
$57.4B
| $11.1M | 0.01% |
162,800
+5,100
| +3% | +$385K |
|
958
PUT
HP
HPQ
$22.4B
| $11.1M | 0.01% |
340,000
+12,000
| +4% | +$431K |
|
959
PUT
Lucid Motors
LCID
$2.52B
| $11.1M | 0.01% |
366,870
+126,440
| +53% | +$3.29M |
|
|
SHNY
960
CALL
DELISTED
Direxion Daily Silver Miners Index Bull 2X Shares
SHNY
| $11.1M | 0.01% |
1,294,800
+49,300
| +4% | +$421K |
|
961
CALL
Norfolk Southern
NSC
$78.3B
| $11.1M | 0.01% |
47,100
+8,800
| +23% | +$2.24M |
|
962
CALL
Cintas
CTAS
$81.3B
| $11.1M | 0.01% |
60,500
+18,600
| +44% | +$3.91M |
|
963
PUT
Axsome Therapeutics
AXSM
$12.4B
| $11M | 0.01% |
130,500
+31,400
| +32% | +$2.89M |
|
964
PUT
MGM Resorts International
MGM
$11.5B
| $11M | 0.01% |
318,300
-195,800
| -38% | -$7.4M |
|
965
PUT
Kroger
KR
$34.2B
| $11M | 0.01% |
180,200
-84,300
| -32% | -$4.95M |
|
966
PUT
Oneok
OKE
$58.7B
| $11M | 0.01% |
110,600
+29,700
| +37% | +$3.04M |
|
967
CALL
Globe Life
GL
$13.3B
| $11M | 0.01% |
98,300
+22,300
| +29% | +$2.41M |
|
968
CALL
ZIM Integrated Shipping Services
ZIM
$3.08B
| $10.9M | 0.01% |
509,200
-162,600
| -24% | -$3.57M |
|
969
CALL
Cencora
COR
$59.4B
| $10.9M | 0.01% |
48,600
-20,000
| -29% | -$4.7M |
|
970
CALL
Petrobras
PBR
$122B
| $10.9M | 0.01% |
849,300
-277,200
| -25% | -$3.87M |
|
971
CALL
Unilever
UL
$130B
| $10.9M | 0.01% |
171,111
+13,600
| +9% | +$918K |
|
972
CALL
Royal Bank of Canada
RY
$290B
| $10.9M | 0.01% |
90,500
-5,500
| -6% | -$679K |
|
973
PUT
Edwards Lifesciences
EW
$48.3B
| $10.9M | 0.01% |
147,300
+17,000
| +13% | +$1.19M |
|
974
CALL
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
$163M
| $10.9M | 0.01% |
238,200
-38,100
| -14% | -$1.84M |
|
975
CALL
Darden Restaurants
DRI
$22.2B
| $10.9M | 0.01% |
58,300
+9,800
| +20% | +$1.64M |
|
Similar funds
Simplex Trading's Q4 2024 Portfolio in Review
As of Q4 2024, Simplex Trading held 10,008 positions worth $179B, up 4.8% from $170B the previous quarter. Its ten largest holdings account for 49% of the portfolio.
Simplex Trading's Q4 2024 filing shows 1,520 new, 3,222 increased, 3,616 reduced and 1,504 closed positions. Its largest new stake was Strategy Inc: 285,022 shares worth $82.5M. The largest sale was NVIDIA, an estimated $133M.
By sector, the portfolio is most concentrated in Technology at 0.68% of assets, up from 0.4% a quarter earlier, followed by Consumer Discretionary and Healthcare.
- Simplex Trading's largest Q4 2024 buy was Strategy Inc: 285,022 shares worth $82.5M.
- Simplex Trading added most to Apple in Q4 2024, an estimated $552M increase.
- Simplex Trading's biggest Q4 2024 reduction was NVIDIA, cutting an estimated $133M.
- Simplex Trading fully exited Pinduoduo in Q4 2024, selling an estimated $82.6M.
- Simplex Trading's ten largest holdings make up 49% of its $179B portfolio in Q4 2024.
- Simplex Trading opened 1,520 new positions and closed 1,504 in Q4 2024.
- Simplex Trading's portfolio value rose 4.8% quarter-over-quarter to $179B.
Based on Simplex Trading's 13F filing for Q4 2024, filed 11 Feb 2025.