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 |
Goldman Sachs
GS
|
+$40.4M |
| 2 |
NVIDIA
NVDA
|
+$23.1M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$21.5M |
| 4 |
Wells Fargo
WFC
|
+$20.8M |
| 5 |
Micron Technology
MU
|
+$20M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Citigroup
C
|
+$21.4M |
| 2 |
Apple
AAPL
|
+$15.7M |
| 3 |
Invesco QQQ Trust
QQQ
|
+$14.4M |
| 4 |
Eli Lilly
LLY
|
+$10.5M |
| 5 |
iShares Biotechnology ETF
IBB
|
+$8.06M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 9.73% |
| 2 | Communication Services | 9.25% |
| 3 | Consumer Discretionary | 8.76% |
| 4 | Healthcare | 8.53% |
| 5 | Financials | 7.38% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
376
PUT
Halliburton
HAL
$27.6B
| $1.02M | 0.04% |
3,780
+590
| +18% | +$31.7K |
|
377
CALL
Johnson & Johnson
JNJ
$615B
| $1.02M | 0.04% |
3,178
-253
| -7% | -$30.2K |
|
378
PUT
Newmont
NEM
$102B
| $1.01M | 0.04% |
5,194
+3,120
| +150% | +$109K |
|
379
Parker-Hannifin
PH
$122B
| $1.01M | 0.04% |
6,328
+2,740
| +76% | +$416K |
|
380
CALL
Ulta Beauty
ULTA
$20.8B
| $1.01M | 0.04% |
638
+396
| +164% | +$108K |
|
381
Lowe's Companies
LOW
$115B
| $1.01M | 0.04% |
12,255
+6,838
| +126% | +$523K |
|
|
PNK
382
DELISTED
Pinnacle Entertainment Inc.
PNK
| $1.01M | 0.04% |
51,577
+20,857
| +68% | +$344K |
|
383
Take-Two Interactive
TTWO
$43.4B
| $1M | 0.04% |
16,958
+14,270
| +531% | +$797K |
|
384
KLA
KLAC
$280B
| $1M | 0.04% |
105,200
+27,510
| +35% | +$242K |
|
385
Vodafone
VOD
$35.7B
| $999K | 0.04% |
37,819
+397
| +1% | +$10.2K |
|
|
CLR
386
DELISTED
CONTINENTAL RESOURCES INC.
CLR
| $997K | 0.04% |
21,969
+17,808
| +428% | +$839K |
|
387
PUT
First Solar
FSLR
$22.4B
| $996K | 0.04% |
1,400
+761
| +119% | +$25K |
|
388
Novartis
NVS
$292B
| $994K | 0.04% |
+14,938
| New | +$995K |
|
389
PUT
Amgen
AMGN
$198B
| $990K | 0.04% |
4,321
+1,910
| +79% | +$317K |
|
|
AGN
390
DELISTED
Allergan plc
AGN
| $983K | 0.04% |
+4,115
| New | +$958K |
|
391
CALL
FedEx
FDX
$76.6B
| $979K | 0.04% |
2,660
+1,432
| +117% | +$274K |
|
392
CALL
Verizon
VZ
$185B
| $973K | 0.04% |
4,256
+276
| +7% | +$13.8K |
|
|
POT
393
DELISTED
Potash Corp Of Saskatchewan
POT
| $967K | 0.04% |
+56,627
| New | +$1.03M |
|
|
GG.WS.A
394
PUT
DELISTED
GOLDCORP INC SERIES A WARRANTS EXP 5/30/2007
GG.WS.A
| $966K | 0.04% |
3,764
+2,523
| +203% | +$648K |
|
395
PUT
ExxonMobil
XOM
$640B
| $965K | 0.04% |
4,949
+144
| +3% | +$12K |
|
396
Evolent Health
EVH
$627M
| $962K | 0.04% |
43,171
+31,992
| +286% | +$614K |
|
397
Madison Square Garden
MSGS
$9.56B
| $962K | 0.04% |
6,756
+2,525
| +60% | +$329K |
|
|
NSR
398
DELISTED
Neustar Inc
NSR
| $962K | 0.04% |
+29,030
| New | +$965K |
|
|
WLL
399
DELISTED
Whiting Petroleum Corporation
WLL
| $960K | 0.04% |
+338
| New | +$1.09M |
|
400
CALL
Gilead Sciences
GILD
$162B
| $959K | 0.04% |
6,262
+56
| +0.9% | +$3.94K |
|
Similar funds
Simplex Trading's Q1 2017 Portfolio in Review
As of Q1 2017, Simplex Trading held 7,485 positions worth $2.31B, up 38% from $1.67B the previous quarter. Its ten largest holdings account for 18% of the portfolio.
Simplex Trading deployed $551M of net new capital in Q1 2017, opening 1,662 new positions and adding to 2,374 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
By sector, the portfolio is most concentrated in Technology at 9.7% of assets, up from 7.2% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was Citigroup, an estimated $21.4M trimmed.
- Simplex Trading's largest Q1 2017 buy was iShares 20+ Year Treasury Bond ETF: 179,511 shares worth $21.7M.
- Simplex Trading added most to Goldman Sachs in Q1 2017, an estimated $40.4M increase.
- Simplex Trading's biggest Q1 2017 reduction was Citigroup, cutting an estimated $21.4M.
- Simplex Trading fully exited Invesco QQQ Trust in Q1 2017, selling an estimated $14.4M.
- Simplex Trading's ten largest holdings make up 18% of its $2.31B portfolio in Q1 2017.
- Simplex Trading opened 1,662 new positions and closed 1,369 in Q1 2017.
- Simplex Trading's portfolio value rose 38% quarter-over-quarter to $2.31B.
Based on Simplex Trading's 13F filing for Q1 2017, filed 21 Apr 2017.